Home / 8,315.21-12,471.26-3,572.21

Finding the Fourth Proportional to 8,315.21, 12,471.26 and 3,572.21

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Solution

The fourth proportional to 8,315.21, 12,471.26 and 3,572.21 is: 5,357.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.21 : 12,471.26 = 3,572.21 : x
  2. Step 2: Convert to fraction form
    8,315.21/12,471.26 = 3,572.21/x
  3. Step 3: Cross multiply
    8,315.21x = 12,471.26 × 3,572.21
  4. Step 4: Simplify right side
    8,315.21x = 44,549,946.33
  5. Step 5: Solve for x
    x = 44,549,946.33/8,315.21
  6. Step 6: Final answer
    x = 5,357.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.